20 Best Window Companies in Windham, CT (2025 Reviews)
Are you looking to upgrade your windows? Our list of the best window installation companies can help you pick the right one for you.
We analyzed all the top-rated window companies in Windham and selected the best 20 based on:
Customer reviews
Window installation expertise
Popularity with home-owners like you
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Why you can trust EcoWatch
Although green energy sources like wind and solar are important when it comes to lowering your carbon footprint, improving your home’s energy efficiency can also have a considerable impact on home energy conservation. When it’s the middle of winter, your old and drafty windows could be making your home more difficult to heat and costing you more in power bills.
Replacement windows improve the insulation in your home, not only making you and your family more comfortable during the summer and winter, but also saving you money and helping the environment.
We’ve made a guide on the top installation companies to help you in your search, so you can not only take advantage of brand-new windows, but also save money on your electricity bills.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
Best Window Installation & Replacement Companies in Windham
The EcoWatch team examined many window installation companies in Windham to find the best ones for our readers. The companies in this article passed our review standards for energy-efficient offerings as well as price, local expertise, customer service and beyond.

Window World
EnergyStar Partner
Large serice area
Low prices relative to competitors
Great industry reputation
Lifetime warranty
Quality of service will depend on your area
Window World has windows expertise in Windham. Window World has been in the window industry for about 27 years.
It has established itself as a company that is certified by the Environmental Protection Agency (EPA) and Energy Star and supports charities like St. Jude Children’s Research Hospital.
Energy Efficiency of Window World WindowsThere are a wide variety of window types that Window World offers, some of which are Energy Star products. Its high-performance Low-E (low-emissivity) coatings and argon gas insulation offer exceptional efficiency and performance for any home.
How much does Window World cost in Windham?Window World does not list prices on its website, but it's known for offering some of the most affordable window installations around. For more detailed information on the cost, you can receive a quote from the company.

Renewal by Andersen
Great industry reputation
Award-winning company
Member of US Green Building Council
Manufactures products in-house
No lifetime warranty
More expensive than competition
Renewal by Andersen has the best availability in Windham. Andersen has been in the window industry for about 27 years.
It has established itself as a company that uses in-home estimates and advanced digital tools to help you plan and visualize your project before getting started.
Energy Efficiency of Renewal by Andersen WindowsThere are a wide variety of window types that Renewal by Andersen offers, some of which are Energy Star products. A handful of windows manufactured by the Andersen corporation were awarded Energy Star’s “Most Efficient” in 2021, and Andersen was named Energy Star’s Partner of the Year in 2019.
How much does Renewal by Andersen cost in Windham?Andersen does not list prices on its website, but based on customer feedback, you can expect to pay anywhere between $750 to $1,250 per window for an installation with Andersen. For more detailed information on the cost, you can receive a quote from the company.

Aeroseal Windows
Many years of experience
Great industry reputation
Low number of customer complaints
Manufactures products in-house
Custom Designs
No lifetime warranty
Not ideal for residential installations
Aeroseal Windows has the best window installation for businesses in Windham. Aeroseal has been in the window industry for about 23 years.
It has established itself as a company that installs windows and doors at businesses across the Eastern U.S.
Energy Efficiency of Aeroseal Windows WindowsThere are a wide variety of window types that Aeroseal Windows offers, some of which are Energy Star products. The company claims it helps businesses save on energy expenses and reduce their carbon footprints with energy-efficient windows, as well as practices like Low-E glass coating, weatherstripping and more.
How much does Aeroseal Windows cost in Windham?Aeroseal does not list prices on its website, but it provides high-quality windows at a competitive price point. For more detailed information on the cost, you can receive a quote from the company.

Window Nation
Award-winning company
Manufactures products in-house
Custom designs
Wide variety of products and services
Installation not covered by warranty
Limited service area
Window Nation has the best residential windows in Windham. Window Nation has been in the window industry for about 16 years.
It has established itself as a company that gives customers the opportunity to view products and to speak to a representative in person in its showrooms.
Energy Efficiency of Window Nation WindowsThere are a wide variety of window types that Window Nation offers, some of which are Energy Star products. Each product has windowpanes coated with a Low-E (low emissivity) glaze that prevents damaging UV rays from heating your home. Plus, the spaces between double- and triple-pane windows are filled with argon gas that’s been proven to improve home insulation.
How much does Window Nation cost in Windham?Window Nation does not list prices on its website, but based on customer feedback, you can expect to pay between $300 and $525 per window installed, making it a more affordable option compared to competitors. For more detailed information on the cost, you can receive a quote from the company.
We’ve recommended installers with shining reputations, but bear in mind that some national companies have independently owned locations in Windham, so the quality of service may vary depending on your local crew. We have tried to remain unbiased and transparent by describing pros and cons for every company we reviewed.
More Window Companies in Windham
Renewal by Andersen Window Replacement
Middletown, CTFree assessment
Price Transparency
Good Customer Service
Services Offered
Energy-Efficient Options
Bay Windows
Window Replacement/Installation
Custom Window Designs
Glass Doors
Double-Hung
Vinyl Frames
Champion Replacement Windows of Boston
East Taunton, MAPrice Transparency
Free assessment
Good Customer Service
Services Offered
Glass Doors
Double-Hung
Bay Windows
Window Replacement/Installation
Power Home Remodeling
Trumbull, CTTimely Service
Price Transparency
Free assessment
Good Customer Service
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Window Nation
Wallingford, CTEducational Website
Free assessment
Price Transparency
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Bay Windows
Double-Hung
Custom Window Designs
Glass Doors
DaBella
Westborough, MATimely Service
family_owned
Transferable warranties
Alside® vinyl windows
Good Customer Service
Services Offered
Vinyl Frames
Glass Doors
Window Replacement/Installation
Double-Hung
Big Dawg Home Improvements
South Windsor, CTPrice Transparency
Free assessment
Timely Service
Good Customer Service
Services Offered
Energy-Efficient Options
Window Repair
Window Replacement/Installation
Skylights
Budget Blinds of Enfield and Hartford
Somers, CTFree assessment
Price Transparency
Good Customer Service
Educational Website
Services Offered
Custom Window Designs
Window Replacement/Installation
Calvary Remodeling
Mystic, CTGood Customer Service
Free assessment
Price Transparency
Educational Website
Services Offered
Window Replacement/Installation
Paramount Gallery
West Hartford, CTGood Customer Service
Educational Website
Free assessment
Price Transparency
Services Offered
Glass Doors
Window Replacement/Installation
Custom Window Designs
Energy-Efficient Options
Kubala Home Improvement
Ludlow, MAPrice Transparency
Educational Website
Free assessment
Services Offered
Glass Doors
Window Replacement/Installation
ZN Construction
Canton, CTEducational Website
Timely Service
Price Transparency
Good Customer Service
Free assessment
Services Offered
Energy-Efficient Options
Window Replacement/Installation
Closet & Storage Systems
Auburn, MAPrice Transparency
Good Customer Service
Educational Website
Free assessment
Services Offered
Mirrors
Glass Showers
Window Replacement/Installation
Couto Construction
Warwick, RIGood Customer Service
Free assessment
Price Transparency
Timely Service
Educational Website
Services Offered
Window Replacement/Installation
Energy-Efficient Options
Window Repair
H & J Homes Solutions LLC
Shrewsbury, MAFree assessment
Price Transparency
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
N.E. Building & Restoration LLC
Attleboro, MAGood Customer Service
Free assessment
Price Transparency
Services Offered
Vinyl Frames
Window Replacement/Installation
Rogers Insulation Specialists
Framingham, MAGood Customer Service
Timely Service
Free assessment
Price Transparency
Services Offered
Energy-Efficient Options
Triple Pane Glass
Window Replacement/Installation
Bert Falsetti's Home Improvement LLC
Shelton, CTServices Offered
Double-Hung
Window Replacement/Installation
Energy-Efficient Options
Vinyl Frames
Mighty Dog Roofing Metro West Boston
Needham, MAFree assessment
Price Transparency
Good Customer Service
Timely Service
Services Offered
Window Replacement/Installation
Window Repair
Skylights
CARRIER ROOFING SIDING & WINDOWS
Webster, MAPrice Transparency
Educational Website
Good Customer Service
Services Offered
Window Replacement/Installation
Advanced Window Systems LLC
Cromwell, CTEducational Website
Good Customer Service
Price Transparency
Free assessment
Services Offered
Window Replacement/Installation
Glass Showers
Double-Hung
Bay Windows
Glass Doors
Calculate how much you can expect to pay for window installation and replacement in Windham, CT using our customized window cost calculator.
Estimates will vary based on window dimensions and other unique factors to your home. Getting in touch with a local window installer is the best way to get an accurate cost estimate for your home.
How Installing Energy-Efficient Windows in Windham Saves You Money
There are several perks of switching to energy-efficient windows. A few reasons you may want to consider making the change include the following:
- Protect your investment: If your home is on the older side, your windows are most likely outdated. Upgrading your windows can make your home more comfortable and also help raise the value of your property if you decide to sell.
- Protect your valuables from fading: When you upgrade to energy-efficient windows with low-emissivity coatings, your floors, carpets and furniture will be protected from fading due to their ability to filter out harmful UV rays.
- Save on power bills: Upgrading to energy-efficient windows lowers your energy bills by about 12% because you use less energy.
- Reduce your carbon footprint: Since energy-efficient windows improve the insulation in your house, you can reduce your carbon footprint by about 12%, according to Energy Star.
Estimated Cost of Window Replacement in Windham
Windows come in varying shapes, purposes and styles, so costs and services will differ remarkably based on several factors. Below, we detail the typical cost and services that you’ll find from window installers.
How Much Do New Windows Cost?
Even though the typical cost to install one window is about $600, it can range from $200 to $1,200. How much it will cost depends on several factors, including the location of your home, size, type, number of windows, material and more.
Whether or not you want energy-efficient windows is another factor that will determine the cost. These will typically cost more than other windows, but on the other hand, you can save about $457 a year on your energy bills in Windham.
The cost of your window installation will also vary based on the kind of window material you choose for the frames. Wood windows are usually the most expensive, though it depends on whether they are completely wood or clad with aluminum or vinyl. Fiberglass windows also tend to be somewhat more expensive than vinyl, but they are more efficient.
What Services do Window Installers Offer?
The first thing to ask yourself when planning a window installation is: Should you get a full-frame installation or a pocket installation?
Full-frame installations are necessary when you want a new style or your window has significant rot or deterioration. With this service, your installers will replace the complete window, including the sill, frame and trim. A pocket installation entails replacing a window within the old frame. This means instead of tearing out the whole window and reinstalling it, the installer will just put the replacement window (also called a retrofit or insert window) into the frame.
If you’re unsure which kind of window installation service you need, your installer can assist you. Typically, the choice is based on factors like the age and condition of the home, the type of building material, budget and time restrictions.
Best Availability
Renewal by Andersen
- Great Industry Reputation
- Award-winning Company
- Member of US Green Building Council
- Manufactures products in-house
Power Home
- Uses eco-friendly materials
- Well-trained, certified installers
- Lifetime or lengthy warranty
Best for Residential Windows
Window Nation
- Custom Designs
- Wide variety of products and services
- Manufactures products in-house
How We Choose the Best Window Installers in Windham
In our search to find the most reliable, eco-friendly window installers in Windham, the EcoWatch team chose the above companies as the best window installation companies in the city. We’ve decided to assess the top window replacement companies in Windham primarily based on their energy efficient offerings, as it’s the most sustainable option and the best one for homeowners. Energy Star certified windows can lower power bills by hundreds of dollars. Along with energy efficiency, our rating methodology considers the following factors:
Service Area
Because this is a guide for Windham, we paid more attention to companies that serve the city. There are other reputable providers that didn’t make the cut because of the low odds that they would serve the average homeowner in Windham.
Work Quality
We’re certain that you’re not looking for a company to do a shoddy job installing windows. We’ve vetted each company included in our guide to ensure its contractors are well-qualified and that the company has gotten lots of positive customer feedback to vouch for its service.
Customer Reviews
We analyzed patterns in recent customer feedback to find the companies with the most customer satisfaction. Customer satisfaction may be the most important factor, as it reflects the quality of services across nearly every category, including quality of parts, professionalism, quality of installation, warranty, cost and more.
Cost
Cheaper windows certainly don’t mean better windows, but we know many of our readers want to keep costs low when possible. When analyzing the prices of providers, we awarded higher scores to companies with reasonable prices and accessible financing rather than “cheaper” services.
Warranty
Protecting your investment in new windows is important. For that reason, window installation companies that give you lengthy warranties for products, parts and installation (aka workmanship) rank higher with EcoWatch.
Years of Experience
Last but not least, we like to see companies that have been in the industry for quite some time. Window installation companies that have more experience will earn higher rankings by our standards. We like to see at least ten years of experience.
Windham, CT Window Replacement FAQs
How much should a window install cost?
The national average cost of replacing one window is about $600 but can range between $200 and $1,200, based on a variety of factors. The price is typically dependent on the type and material of the window, the location of your property and the size of the window. Also, remember that energy-efficient windows may cost more initially but can save you a decent amount of money a year in energy bills.
What are the most common types of replacement windows?
There are various kinds of windows you can get for your house, such as transom windows, bay windows, slider windows, awning windows, picture windows, casement windows and double-hung and single-hung windows.
When should I use a window installation company?
Unless you have experience with home improvement projects and have all the tools you need to replace your own windows, we recommend hiring a professional installer. The window installation process is complicated and can take anywhere from four to six hours for one window. Although it’s tempting to try to do it yourself to save money, hiring a professional is a faster, more efficient and safer option.
How long does window installation typically take?
Each window takes about 30 minutes to install based on the kind of window. However, the window installation can be a two-day job — or more — if you need to have a lot of windows installed.